baber/WOPTO huggingface dataset:
Patent CA-2116368-A1 (CA)
Title: Snowmaking gun
Inventor: HANDFIELD LOUIS
IPC: F25C3/04
Filed: 1994-02-24
Abstract: A relatively efficient snowmaking gun which is of the compressed air and water type includes a water tube for receiving water from a source thereof under pressure and discharging the water in an annular diverging stream through an adjustable valve and a turbine which chops the water into fine droplets; and a central nucleator for receiving compressed air from a source thereof and for producing a central stream of fine ice particles downstream of the discharge end of the gun for mixing with the water to produce snow, temperature permitting.  A preferred form of nucleator is an ultrasonic resonator for receiving air and water from sources thereof under pressure to produce an annular central stream of fine water droplets in air while creating ultrasonic waves downstream of the gun outlet.  The gun can also include a casing defined by inner and outer shells surrounding the water tube and forming an air chamber which receives compressed air for discharge through a plurality of spaced apart nozzles.  The air from the nozzles forms an annular diverging stream of air for mixing with the water from the water tube and the fine droplets or nuclei produced by the central nucleator or resonator.
Patent CA-2117285-A1 (CA)
Title: Use of interleukin-8
Inventor: KELLY RODNEY WILLIAM
IPC: A61K38/095
Filed: 1992-11-23
Abstract: The invention provides the use of interleukin-8 or functional derivative thereof for manufacture of a medicament for inducing cervical ripening in a female mammal. The invention provides the use of the compounds of the invention in connection with birth or abortion. Further the invention provides the use of the compounds of the invention in connection with surgical procedure and diagnostic procedure.
Patent CA-2119866-A1 (CA)
Title: Exercise clothing and method of using the same
Inventor: CLOVER ELIZABETH A
IPC: A41B9/06
Filed: 1992-09-25
Abstract: ABSTRACT OF THE DISCLOSURE       A clothing ensemble for use in exercising which includes multiple layers, each layer including a garment adapted to be worn over the trunk and limbs of the body.  Each of the layers has a vent area operable to be positioned in at least one of the body joints between said trunk and limbs.  The layers are worn so that the vent areas register with each other to thereby provide a path for discharge of heat and moisture from the underlying body joint outwardly through the vent areas of all the layers.
Patent CA-2120246-A1 (CA)
Title: Clamshell retainer used in hollow fiber membrane device
Inventor: TRIMMER JOHNNY L
IPC: B01D63/02
Filed: 1992-09-30
Abstract: The invention relates to a hollow fiber membrane device having a hollow fiber membrane bundle (304) with tubesheets (300, 300a) end caps (100, 200), a clamshell retainer means (500), a circumferential keeper means (700), and optionally a hollow envelope (1200) enclosing the membrane bundle (304).
Patent CA-2122834-A1 (CA)
Title: Ultrasonic ablation device adapted for guidewire passage
Inventor: NITA HENRY
IPC: A61F2/00
Filed: 1992-11-02
Abstract: An ultrasonic ablation device for effecting ultrasonic ablation of intravascular obstructions such as plaque or thrombi. The ultrasonic ablation device has a) an elongate catheter body (12), b) a wave guide or ultrasound transmission wire (20) extending through the elongate catheter body (12), and c) a distal head or probe member (22) positioned at the distal end of the catheter body. A guidewire lumen or passageway (14) extends longitudinally through the catheter body (12) and a guidewire aperture or passageway (60) extends through the distal head or probe (22) such that a guidewire (34) may be passed through the distal head or probe (22) and through the catheter body (12). Also disclosed is an improved distal head or probe which may be incorporated in any elongate ultrasonic ablation device, the improvement comprising the formation of a concavity or indentation in the distal or frontal face (23) of the distal head or probe (22) to improve the cavitation created thereby.
Patent CA-2124258-A1 (CA)
Title: Method and apparatus for leak detection and pipeline temperature modelling method and apparatus
Inventor: BAUMOEL JOSEPH
IPC: G01F1/66
Filed: 1994-05-25
Abstract: A method and apparatus of leak detection for a pipeline. The method includes dividing the pipeline into a plurality of segments, a first site station provided at the beginning of each segment and a second site station provided at the end of each segment, dividing each segment of the pipeline into a plurality of hypothetical pipeline sections, each section having the same nominal volume, measuring the liquid flow into the first section and determining a volume of liquid that has passed the first site station for a defined period, measuring the temperature of the liquid entering the first section at the first site station, measuring the liquid flow out of the last pipeline section of the segment and determining a volume of liquid that has passed the second site station for the defined period, measuring the temperature of the liquid leaving the last section at the second site station, measuring the temperature of the ambient to the pipeline at the first site station or that representative of the topography of the segment, measuring the temperature of the ambient to the pipeline at the second site station or that representative of the topography of the segment, computing the effect of the measured ambient temperatures at the first and second site stations on the sections intermediate the first and second site stations, computing the change in temperature of each section intermediate the first and second site stations due to conversion of kinetic energy into thermal energy and radiation and conduction of energy to or from the section, computing the change in volume of each section of pipeline wall and the change in volume of the liquid in each section based on the computed change in temperature of each section, determining the difference in measured volume between the volumes determined that have passed the first and second site stations for the defined period, correcting the difference in measured volume between the first and second site stations by adding or subtracting the change in the liquid and pipeline wall volume of all sections of the segment during the defined time period, comparing the corrected difference in measured volume between the first and second site stations with a threshold level, and generating an alarm signal if the difference exceeds the threshold level.
Patent CA-2126946-A1 (CA)
Title: Apparatus and method for recording scrambled digital video signals
Inventor: SUGISAKI KIMINORI
IPC: H04N7/169
Filed: 1994-06-28
Abstract: ABSTRACT OF THE DISCLOSURE         Unauthorized copying of a video signal is prevented by means of a compression encoding circuit that selectively applies scrambling to the encoded signal.  The compression encoding circuit is of the type which divides frames of a digital video signal into rectangular data blocks, aggregates a predetermined number of data blocks to form macroblocks, shuffles the macroblocks within the video frame, and performs discrete cosine transform processing block-by-block on the rectangular data blocks making up the shuffled macroblocks.  The scrambling may be accomplished by rearranging the order of the rectangular data blocks within each macroblock, or by changing the pattern according to which macroblocks are shuffled in the video frames.        The scrambling may also be accomplished by interchanging bits in a component, such as the DC component, of the DCT-processed data, or by setting such data bits to predetermined values.  A compression encoding circuit with the above-described scrambling capability may be used in a digital video tape recorder (VTR), and the scrambling capability may be activated in response to a copyright protection signal present in an analog video signal supplied as an input to the digital VTR.   i
Patent CA-2130142-A1 (CA)
Inventor: LIU CHIN-SHUNG
IPC: F16B7/10
Filed: 1994-08-15
Abstract: A collapsible luggage  trolley includes a  wheeled base from which two parallel posts extend upward with a  handhold mounted on the free ends thereof and a middle support member connected between the  posts at a  middle position  thereof.          Each of the posts has a lower, a middle and an upper tubular sections  telescopically  received  within  each  other  and retained in the  expanded position by  the first and  second retaining pins  which  are biased to extend  through  holes formed  on the  tubular sections.   A plug  movably received within  the  upper section  is  connected to  a  release bar disposed within the handhold by a link to allow the  plug to be controlled by the release bar.  A cavity is formed inside the  plug  for receiving  therein  the  first retaining  pin between  the  upper section  and  the  middle  section.   An inclined camming surface  is provided within  the cavity  so that when the plug is moved by the  release bar, the camming surface acts upon the first retaining pin to withdraw it for releasing the retaining engagement between the upper section and the middle  section.  The plug has a  round-headed lower end  projecting out of the upper section and into the middle section which when moved to contact the second retaining pin between the  middle section and the lower  section acts upon and moves it back  to break the retaining engagement between the middle section and the lower section.
Patent CA-2130240-A1 (CA)
Title: Compresseur a inertie recyclee
Inventor: GAGNE GABRIEL
IPC: B60K6/12
Filed: 1994-08-16
Abstract: Inertia is a characteristic of all objects. When an automobile is stationary its inertia must be overcome by the application of force before it will move. To increase its speed further force must be applied. The inertia of the car resist any speed reduction. The car has a certain energy content stored in the form of speed. To decrease its speed normally the brakes must be applied. My concept is to replace partly the use of the brakes with the use of a turbine or a Wankel pump, to recycle the inertia of the car through the pumping action of the turbine or the Wankel pump. To raise a pressure in an air tank via the oil pumped, to put the car back in motion The turbine or the Wankel pump would be integral part of the wheel mecha-nism and would build the pressure by the movement of the wheels.
Patent CA-2131544-A1 (CA)
Inventor: GUPTE ARUN R
IPC: A61M15/00
Filed: 1993-03-13
Abstract: A separator useful as an accessory for powder inhalation devices essentially has a chamber (5) in which are arranged one or several baffle plates (6) provided with passageways (7), a connecting branch (4) with a powder inhalator and a mouthpiece (8).
Patent CA-2134717-A1 (CA)
Title: Traffic monitoring system with safe speed computations
Inventor: KLASHINSKY ROD
IPC: G08G1/08
Filed: 1994-10-31
Abstract: Traffic monitoring systems which are provided herein include a set of sensors which is disposed in a traffic lane approaching a hazard for providing signals which are indicative of the speed, and which are also indicative of at least the weight of a vehicle traversing those set of sensors. A processor has a memory for storing site-specific dimensional data related both to the hazard and to signals received from the set of sensors. A traffic signalling device is associated with the traffic lane and is disposed downstream of the set of sensors. The processor, which controls the traffic signalling device, is responsive to the signals from the set of sensors for computing an actual vehicle speed and a computed maximum vehicle speed, which is derived from the site-specific dimensional data, and also from at least the weight of the vehicle. That speed is the maximum speed for that particular vehicle safely to negotiate that particular hazard. The processor operates the traffic signalling device if the computed actual vehicle speed exceeds the computed maximum vehicle speed. One embodiment is located before a steep downgrade and computes a safe descent speed for a vehicle to descend the downgrade and displays the safe speed on a roadside sign. Another embodiment is located before a curve, e.g., a highway exit ramp, and uses ramp data together with vehicle weight, height and class of vehicle information to predict whether the vehicle will exceed a threshold speed for that vehicle to negotiate that curve without rollover. A third embodiment is located on a steep downgrade approaching a traffic signal controlled intersection and computes whether the vehicle is a "runaway" which cannot stop at the intersection if necessary. In that case the system pre-empts the traffic signal to ensure that the vehicle has right of way through the intersection.
Patent CA-2136257-A1 (CA)
Title: Brightness and contrast control for a digital pulse-width modulated display system
Inventor: URBANUS PAUL M
IPC: G09G3/20
Filed: 1994-11-21
Abstract: A method and system for adjusting the brightness and contrast of a digital pulse-width modulated display without scaling the input image data. Brightness is adjusted by changing the duty cycle of a displayed pixel either by altering the bit display durations, or by turning the pixel on during blanking periods 36. The contrast ratio may be altered by changing the display duration of at least one of the MSBs differently than the display duration of at least one of the LSBs. Contrast may be increased by extending the MSB display periods 50 and shortening the LSB display periods 52. Contrast may be decreased by shortening the MSB display periods 56 and extending the LSB display periods 58. The color tint of the displayed image may be altered by individually changing the brightness of the constituent colors.
Patent CA-2136442-A1 (CA)
Inventor: HAAGA JOHN R
IPC: A61B10/00
Filed: 1993-06-04
Abstract: A tubular sheath (36) is disclosed which is slidably disposed over a tubular medical device which tubular medical device (70) is positioned at a body tissue access site. The sheath (36) is deposited within a patient to assist in sealing the incision caused by the tubular medical device (70) and inhibit internal and external bleeding. The sheath (36) includes a generally rigid outer coating (83) and an absorbable and expandable inner core (84), which when positioned, in situ, at the accessed opening of the patient's body part can function as a vascular plug.
Patent CA-2137555-A1 (CA)
Title: Method of thickening of water, and its use
Inventor: LOHNERT GERNOT
IPC: C09K23/00
Filed: 1993-06-11
Abstract: The method proposed for increasing the viscosity of water is charcterized in that, for the instantaneous production of increased-viscosity water which does not lose its viscosity characteristics on storage, a slurry is prepared containing 1-9 %, preferably 2-5 %, of high-disperse synthetic, preferably pyrogenic, silicic acid in water with only a small amount of added ethers of fatty alcohols or saccaric alcoohols or esters of fatty acids with poly(ethylene glycol) or poly(propylene glycol) with a molecular weight between 250 and 50,000, at a concentration of 0.005 to 1.5 %, poly(ethylene glycol) or poly(propylene glycol) with a molecular weight between 600 and 50,000 at a concentration of 0.05 to 1.5 %, poly(ethylenimine) at a concentration > 0.003 or poly(N-vinyl-2-pyrrolidone) at a concentration of 0.05 to 0.5 %.  Characteristic of this system is its marked rheopexic properties which are shown instantaneously under the action of shear forces. Under such conditions, the viscosity increases and a stable, homogeneous terminal state is produced. The increased-viscosity water thus produced can be used as, for instance, a fire extinguishant, a carrier for crop sprays and cleaning agents or as the liquid in water beds.
Patent CA-2138219-A1 (CA)
Inventor: BOURQUE RENE
IPC: A63C17/14
Filed: 1994-12-15
Abstract: A braking system for an in-line skate, for use with in-line skates having a chassis and boot assembly and a cuff pivotally mounted thereon, preferably including a plate secured to the cuff at one of the pivot points, to rotate relative to the boot with rotation of the cuff.  A cable is attached to the plate a short distance from the pivot point, and is routed to lead rearwardly from the lower edge of the plate and thence through a cable housing connected to the boot and chassis near the heel area, and thence forwardly to the area of the wheels.  At least one brake assembly is connected to the cable and is configured such that braking action is initiated when the cable is pulled by rearward rotation of the cuff relative to the chassis and boot assembly.
Patent CA-2143061-A1 (CA)
Inventor: SLICKER JAMES
IPC: B60W10/10
Filed: 1995-02-21
Abstract: An automatic clutch controller for a vehicle that reduces the oscillatory response to clutch engagement. The automatic clutch controller receives inputs from an engine speed sensor (13) and a transmission input speed sensor (31) and develops a clutch actuation signal controlling a clutch actuator (27) from disengaged to fully engaged. The clutch engagement signal at least partially engages the friction clutch (20) in a manner to cause the measured transmission input speed to asymptotically approach engine speed employing an approximate inverse model of this oscillatory response. The automatic clutch controller preferably includes a PID function and a differential engine speed function, which together adaptively adjust clutch engagement corresponding to vehicle loading. The automatic clutch controller includes a PID regulator (65) responsive to the difference of engine speed and transmission input speed, a prefilter (68) operating on the resulting PID signal, and a compensator (70) constructed to reduce the need for detailed particularization for individual vehicles or vehicle models by reducing the system closed loop sensitivity to vehicle parameter variations.
Patent CA-2145026-A1 (CA)
Title: Aminoalkyl benzoxazolinones and benzothiazolinones; process for preparing the same and pharmaceutical compositions containing them
Inventor: MOUITHYS-MICKALAD ANGE
IPC: A61K31/42
Filed: 1995-03-20
Abstract: 6-Aminoalkyl-benzoxazolinone or -benzothiazolinone derivs. of formula (I) and their salts are new: R1 = H or alkyl; n = 1 or 2; X = O or S; R2 = H or alkyl; R3 = (CH2)mR4; m = 1 - 4; R4 = cycloalkylamino, dicycloalkylamino, N-cycloalkyl-N-alkylamino or a heterocyclic gp. of formula (i) opt. substd. by aryl or aralkyl: s = 4 - 8; or NR2R3 is a gp. of formula (i) substd. by aryl or aralkyl; where aryl is phenyl or naphthyl opt. substd. by halo, alkyl, OH, alkoxy and/or CF3; aralkyl is phenylalkyl or naphthylalkyl opt. substd. by halogen, alkyl, OH, alkoxy and/or CF3; alkyl is 1-6C alkyl; alkoxy is 1-6C alkoxy; and cycloalkyl is 3-9C cycloalkyl.
Patent CA-2145517-A1 (CA)
Title: Bovine pancreatic trypsin inhibitor derived inhibitors of factor viia - tissue factor complex
Inventor: LASTERS IGNACE
IPC: A61K38/00
Filed: 1993-07-01
Abstract: Compounds derived from BPTI which inhibit factor VIIa-TF complex with an inhibition constant of less than 500 nM, their pharmaceutical compositions, and methods of use. Also disclosed are isolated nucleic acid segments encoding for the com-pounds, vectors comprising the nucleic acid segment and promoter, transformed host cells, and a method for preparing the com-pounds using transformed host cells.
Patent CA-2149252-A1 (CA)
Title: Polyolefin stretch film
Inventor: VELAZQUEZ ALBERTO
IPC: B65D65/40
Filed: 1995-05-12
Abstract: A polyolefin blown or slot cast monolayer or multilayer stretch film useful as a trayed overwrap e.g. for fresh red meat includes at least three layers in the multilayer embodiment each of which contains an ethylene alpha-olefin copolymer having a density below 0.915 g/cm3 and having a melting point of at least 90°C with at least one outer layer and preferably also the first outer layer or the core layer having a second ethylene alpha olefin copolymer having a melting point less than 80°C blended therein.
Patent CA-2151151-A1 (CA)
Title: Photodefineable polymers containing perfluorocyclobutane groups
Inventor: MOYER ERIC S
IPC: C07C59/68
Filed: 1993-12-01
Abstract: A polymer has at least one photoactive site and more than one perfluorocyclobutane group. New monomers containing photoactive sites or photoactive precursors and at least one perfluorovinyl group are useful for making such polymers. Processes of making such polymers and the monomers from which they are made are disclosed. The polymers are useful in coatings, in coating, photoresists, and other photoactive applications.
Patent CA-2152993-A1 (CA)
Title: Roll arrangement
Inventor: RENN SANDRA
IPC: F16C13/00
Filed: 1995-06-29
Abstract: A roll arrangement is described with a rotatable roll jacket, a fixed carrier and a multi-part support arrangement disposed between the roll jacket and the carrier and consisting of sliding shoes which are movable in the radial direction relative to the roll jacket.  In this arrangement neighbouring sliding shoes in the axial direction and/or in the circumferential direction of the roll jacket are biased towards one another groupwise in gap-free manner while maintaining relative movability.
Patent CA-2153206-A1 (CA)
Title: Use of doped yttrium, lutetium or gadolinium tantalates in low voltage luminescence
Inventor: HUGUENIN DENIS
IPC: C09K11/68
Filed: 1995-07-04
Abstract: The use of doped tantalite of yttrium, lutetium or gadolinium in the form of luminophores is for the mfr. of devices with a high voltage luminescence. The tantalite used may be doped with niobium or a rare earth chosen esp. from praseodymium, europium, terbium and thulium. The high voltage luminescence device produced is also claimed.
Patent CA-2155293-A1 (CA)
Inventor: ROUSSO JOHN G
IPC: F21W111/10
Filed: 1995-08-02
Abstract: A flashlight includes a flexible core comprising a pair of conductive wires which electrically connect a source of power to a power using implement.  A flexible spine surrounds the pair of conductive wires and includes a plurality of interconnected universally rotatable members.          A resilient sleeve engages the outer surface of the rotatable members forming the spine.  The flashlight includes a working end housing and a base housing.  A first anchor connects one end of the flexible core to the base end housing and a second anchor connects the other end of the flexible core to the working end housing.  The outer surface of the resilient sleeve is restrained against relative twisting or longitudinal movement with respect to each housing.
Patent CA-2156211-A1 (CA)
Title: Belt cutting apparatus
Inventor: HANSEN KENNETH N
IPC: B65G15/30
Filed: 1995-08-16
Abstract: An apparatus for cutting a conveyor belt. The conveyor belt is clamped against a cutting surface on the base of the apparatus by a pair of parallel clamping bars.  A lever arm is pivoted to, and is axially slidable on, a shaft disposed parallel to the clamping bars and the lever arm carries a cutting head.  A pair of blades are mounted in an acute angle relation on the cutting head, and as the lever arm is manually pivoted downwardly, the blades cut a pair of slits in the belt. The lever arm is then pivoted up and advanced axially along the shaft and the cutting action is repeated to thereby cut a plurality of V-shaped fingers in the belt, which can be interdigitated with fingers of a second belt end and subsequently bonded together to provide an endless spliced belt.
Patent CA-2158256-A1 (CA)
Title: Oximeter with motion detection for alarm modification
Inventor: SWEDLOW DAVID B
IPC: A61B5/1455
Filed: 1994-03-21
Abstract: A pulse oximeter which modifies the alarm condition when motion is detected.  Basically, if the lack of a pulse is determined to be as a result of motion artifact, the generation of an alarm is postponed. In addition, the display indicates that motion is present and that the last reading is questionable due to the presence of motion. The invention also determines if motion artifact is present from the pulse oximeter detector signal itself. The ratio of the positive and negative peaks of the derivative of the pulse signal are compared to a motion/blood pulse threshold.